Insulator-pin.



. I PATENTED JAN. 21, 1908. D. V. SNAPP & G. W. PRAHBR.

INSULATOR PIN.

APPLICATION FILED JUNE 21. 1907.

ealism UNITED era 4 ES PA NT OFFICE.

. DELOS V. SSAPP, 01* HOLDREGE, AND CHARLES W. FRAIiER, OF LINCOLN,NEBRASKA.

INSULATOR-PIN.

Specification of Letters Patent,

Batented. Jan. 21, 1908.

Application filed m g- 1; 1907. Serial H0. 880-166.

To all whom it may concern:

Be it known that we, DELOS V. SN APP CHARLES W. FRAHER citizens of theUnited States,'residing at l-loldregc, Phelps county, and Lincoln, inthe county of Lancaster and State of Nebraska, respectively, haveinvented certain new and useful Im rovements in Insulator-Pins, of whichthe ollow ing is a specification.

Our inven 'on relates to'insulator pins employeito support telephone,telegraph, and other electric wires upon cross-arms.

One of the principal diflioulties encountered in maintaining telegraphand telephone lines is due to the fact that the continual vibration ofthe wires causesthe working loose of the nut which secures the insulatorbolt in. place. This results in wire trouble and is. a source of heavyexpense. I y

The principal object of our invention is to obviate. this difficulty andprovide asel-flocking, nutless' insulator supporting pin adapted toholdthe insulator of telegraph, telephone, and other electric wire securelyupon the cross-arm without working loose.

A further object is to provide an insulator supporting pin having anenlarged flaring base adapted to be seated firmly upcu a(f-I.(lSS-fli'lll, lIl(l a bolt adapted to engage the body of the pindirectly.

The invention is illustrated in the accompanying drawings, in which-- Fiuro l is a view in side elevation showing the improved pin mounted upona crossarm; Fig. 2 is a vertical section of the same; and Fi 23 is atransverse section taken on line 3-----5 of Fig. 1.

Referring to the i'lrawings, A is the bodyportion of the pin, madepreferably of wrought or cast iron or other suitable nwtol and formedwith a broad lluring llilSU (1-, prvl' crably circular in outline.

for cngngonwul oi a other suitable IllLlLlllS,

is'provulrd with a turning device, and threaded socket a in the base (L.portion is tapered towards its upper (Jul-to such a size as to permitthe formation of threads to rem-ire tho usual )art B, upon which theinsulator is screwed or otherwise last cued.

bolt head. 0 and merging into lln- 'l'he )ol't-Cisformcd with proicctingole-ans,

re crably wings or ridges r: tapering from the The bod' \=porl tion is frmed \\'lill llzit suilacos 0,, oi any v u t f an insulator then-on,said body-portion being the bolt at 0 ,120 revent the bolt from turningwhen the body-portion A is screwed down on threaded end 0 and the head 0is drawn up against the under surface of the cross-bar D as shown inFig. 1. l

The use 'of our im roved pin will be'readily apparent iroin theoregoing. The bolt. C is put through the cross-arm-and the body-p'ortionA is screwed on to the threaded end 0 thereof, the wings or 'ridges' cbeing'forced into the wood of' the cross-arm 'I he bolt isthusself-locking, and when the wire; is fas tenedltothe insulator novibration or'pulliof Q an :kind can work the bolt loose.

twill be oliservedthat the flared substantial base makes the-mounting mfirm, and

that all work of attaching the pin can be'don'e on top of the arminstead of below. More-- over,'there is no necessity for lock-nuts,cotters, nails, (battered threads orany ofthe" di{ vers ways to keeptheusual nut from working loose, and he appearance of thecross-arm ismuch improved.

Vle are aware that variouschangesmay be made in the details ofconstruction of the device herein disclosed without departing from thespirit of our invention, and these, we wish it understood, fall strictlywithin the scope and purview thereof.

Havings described our invention, what we claim as new and desire tosecure byL'etters 1 Patent of the United States, is+.

'1. An insulator pin comprising a'bodyportion providedwi h m'c'ansformounting an ins-i 1 l =2 tor there0ir, said body-portion being fornn ,orengagement. of a turning device and provided with a. threaded socket inits base, and a bolt formed with projectin means to prevent turning in across-arm an threaded to engage said body-portion. sub

stautinlly as di'scrilmd. 2, An insulator pin comprising a bodyportionprovided w th means for mounting an insulator thereon and having a'flaring :dlmlk of 5 lmso,-said body-portion boing'form'cd for enthreadedto engage said.

gagement of a turning device and provided 5 names to this specificationin the presence (if i with a threaded socket in said base, and a gtwosubscribing witnesses.

bolt formed with projecting means to pre- DELOS V. SNAPP.

vent turning in a er0ss-arm and threaded CHARLESW. FRAHER.

to engage said body-portion, substantially Witnesses:

as described. HJCJMOORE, In testimony where-of we havesigned our S. FGRAHAM.

